Parallel Window: BK7A + UV Grade Fused Silica (PW)
General purpose plane windows
- Flat polished surfaces
- Laser finish both sides
These general purpose plane windows are polished to λ / 10 flatness except where indicated otherwise. They are intended for transmissive use and are parallel to better than 10 arc seconds. Select a coating appropriate to your application or contact us with your special coating requirements.
Surface Flatness: |
If thickness ≤ 1.5mm : λ/4 @ 633nm
If thickness > 1.5mm : λ/10 @ 633nm |
Surface Quality: |
<10/5 (both sides) |
Parallelism: |
<10 arc sec |
Diameter Tolerance: |
<+ 0.00 / – 0.20 mm |
Thickness Tolerance: |
<± 0.25 mm |
Clear Aperture: |
>85% of diameter |
Bevel: |
0.3 mm (typical) x 45° |